Lens Driving Adapter Safety Control via Attachment Detection
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Solution Overview
Problem
Existing power zoom apparatuses have a design flaw where the rotating body is exposed, posing a risk of fingers, nails, or hairs getting caught between the rotating body and the outer case when an independent power source is used, as they require more power for higher speed and torque but lack adequate safety measures.
Innovation Solution
A lens driving adapter with a built-in power source and a controller that determines its attachment state to the lens apparatus, allowing operation only when attached, thereby preventing the motor from rotating when not attached to prevent accidental entanglement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If an independent power source is provided in the lens driving adapter to achieve higher zoom speed and torque, then zoom drive performance is improved, but the risk of accidental entanglement of fingers, nails, or hairs increases due to the exposed rotating body
Solution Approach 1:
The patent applies the dynamics principle by making the rotating body movable only under specific conditions - it rotates freely when attached to the lens apparatus, but becomes fixed when not attached. This dynamic state change resolves the contradiction by enabling high-speed rotation when needed while preventing entanglement hazards when the device is detached.
Solution Approach 2:
The patent implements feedback through a detection mechanism that monitors whether the lens driving adapter is attached to the lens apparatus. Based on this detection feedback, the controller automatically adjusts the state of the rotating body - allowing rotation when attached and fixing it when detached - thereby resolving the safety performance contradiction.
2Adaptability or versatility
If the rotating body is exposed at the opening for independent rotation capability, then operational independence is improved, but safety decreases due to space between rotating body and outer case
Solution Approach 1:
The rotating body transitions between two dynamic states: exposed and rotatable when attached to enable independent operation, and retracted or fixed when detached to eliminate entanglement risks. This dynamic adaptation resolves the contradiction between versatility and safety.
Solution Approach 2:
The detection mechanism performs preliminary detection of the attachment state before allowing rotation. By detecting whether the adapter is attached beforehand, the system prevents the harmful action of entanglement from occurring in the first place, while still allowing independent operation when conditions are safe.
3Productivity
If power source is independently provided in lens driving adapter, then zoom drive speed and torque are improved, but device complexity increases due to additional power source and driving member
Solution Approach 1:
The lens driving adapter is designed with multi-functionality, serving both as a power delivery interface when attached to the lens apparatus and as an independently operable unit when detached. The same structural components perform multiple functions, reducing overall complexity while maintaining high zoom drive performance.
Solution Approach 2:
The patent merges the power source and control system into a single integrated lens driving adapter unit. By combining these functions in one device rather than separating them, the patent reduces overall system complexity while achieving high zoom drive speed and torque when attached.
Data Source
AI summary
An optical driving apparatus (401) is removably attached to a lens apparatus (201), and includes an attachment portion (403) that is attachable to the lens apparatus, a driver (404, 405) that electrically drives an operation member (204) that manually moves an optical system of the lens apparatus in an optical axis direction, and a controller (402) that controls the driver based on an instruction via an input portion (408), and the controller allows an operation of the driver when the optical driving apparatus is attached to the lens apparatus, and limits the operation of the driver when the optical driving apparatus is not attached to the lens apparatus.